Oracle 12C grid挂接ASM磁盘组，使用database进行数据库配置，然后使用client配置服务以登陆PLSQLDevekop。在一次shutdown immediate以后，直接startup报错“ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务”，随后报错“ORA-24324: 未初始化服务句柄，ORA-01041: 内部错误, hostdef 扩展名不存在”。退出sqlplus重新登陆conn xxx/xxx@orcl as sysdba的时候继续报ora-12514监听程序无法识别连接符，conn / as sysdba会报“ORA-12560: TNS: 协议适配器错误”,如果在listener.ora中配置SID ORCL=orcl，通过conn xxx/xxx@orcl as sysdba可以连接，但是startup仍然会报
ORA-01078: failure in processing system parameters
ORA-01565: error in identifying file '+RAC_DISK/RACDB/spfileRACDB.ora'
ORA-17503: ksfdopn:2 Failed to open file +RAC_DISK/RACDB/spfileRACDB.ora
ORA-15077: could not locate ASM instance serving a required diskgroup
求指教如何处理
------解决思路----------------------
ORA-01565: error in identifying file '+RAC_DISK/RACDB/spfileRACDB.ora'
ORA-17503: ksfdopn:2 Failed to open file +RAC_DISK/RACDB/spfileRACDB.ora
从这两个错误上看，磁盘组挂接的有问题
切到asm状态看，看对应文件的状态